Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas voltas Germán Sánchez completou com o chassi Dallara F308?
 ###Tabelas: CREATE TABLE ncaa_consensus_all-american_team (ncaa_consensus_all-american_team_id AUTO_INCREMENT PRIMARY KEY, Position VARCHAR, Name VARCHAR, School VARCHAR, Unanimous VARCHAR, College Hall of Fame VARCHAR) CREATE TABLE tour_dates (tour_dates_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, City VARCHAR, Country VARCHAR, Venue VARCHAR, Tickets available since VARCHAR, Attendance INT, Comment VARCHAR) CREATE TABLE teams_and_drivers (teams_and_drivers_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Driver VARCHAR, Class VARCHAR, Chassis VARCHAR, Rounds VARCHAR) CREATE TABLE early_broad_gauge_locomotives_for_all_traffic_types (early_broad_gauge_locomotives_for_all_traffic_types_id AUTO_INCREMENT PRIMARY KEY, Class (old) to 1868 VARCHAR, Railway number(s) VARCHAR, Quantity INT, Year(s) of manufacture VARCHAR, Type VARCHAR) CREATE TABLE lpga_tour_wins_9 (lpga_tour_wins_9_id AUTO_INCREMENT PRIMARY KEY, No. INT, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, To par VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR, Winners share ( $ ) INT)  
SELECT Rounds FROM teams_and_drivers WHERE Chassis = dallara f308 AND Driver = germán sánchez